1995 4.3L caprice modifications

I recently bought a 95 chevy caprice-4.3L V8. The car drives good but its sluggish with acceleration and kind of slow. I was wondering if anyone could give me some specific modifications for my car. since everything i see like air intakes are for the 350s. It has 72,000 miles would it be worth it to modify the 4.3 or just wait until the engine and trans go out and swap for a 350 LT1 or something and modify that. I would like some info on cold air intakes, throttle spacers, and computer chips that would fit my car. Exhaust would be something down the way.
Thanks for any replies.

The L-99 motor you have is like a baby LT-1. the good thing is that all the outer parts are the same as the LT-1(5.7L). So the headers , air intake, by-pass hose , electric water pump, under drive pulleys, ETC will fit just look for parts for any 1995 LT-1. Like the impala or caprice w/5.7L. the coolist part of all is that the LT-1 & LT-4 (95 vetts ) will fit with no problems :cheers: